I'd like to use .Net Graphic functionality from C++ managed project. I'd like to create Windows.Drawing.Image (based on MemoryStream) from inmemory c++ array of bytes.
How can I make this piece of code work:
System::IO::Stream^ ms = gcnew System::IO::MemoryStream();
BYTE buf[1024 * 8]; // C++
int size; // C++
...
ms->Write(&buf, 0, size)
Thank you in advance!
You can do it something like that:
int size = 1024;
BYTE buf[1024];
// unmanaged buffer
System::IntPtr intPtr = System::IntPtr( buf );
// managed buffer
array<unsigned char>^ managedBuf = gcnew array<unsigned char>(size);
{
// write things to buf[]
}
// copy unmanaged buffer to managed buffer
Marshal::Copy( intPtr, managedBuf, 0, size );
System::IO::Stream^ ms = gcnew System::IO::MemoryStream();
ms->Write( managedBuf, 0, size);
